I finally came back after 7 years of research and I am pleased to inform you I still think Zero is straight, why? I have some evidence from another character and clearly comparisons of completely different characters means your argument is valid (I'm looking at you, Lorne and Wolin!)
Let's take our star boy Birkin. He is also straight. He is clearly married, has a kid and probably 0.5 dog, I say 0.5 because he's never at home and chances are the poor dog is not getting enough to eat. This clearly rules out extramarital relationships, because straight men don't do that at all. How can he have a kid if he didn't enjoy the feeling of wet pussy and gushing all over inside it. Oh yes bring on that cissexism too. Despite all this evidence you still wrote him having gay sex (because we don't use bi in our terminology, even if you can't spell Birkin without the bi) and it is clear that this seems to be a pathological pattern you follow with other straight men.
Case closed, court dismissed, sentence: TWENTY YEARS (maybe in 20 years I'll come back to this comment and argue with you even more)
no subject
Let's take our star boy Birkin. He is also straight. He is clearly married, has a kid and probably 0.5 dog, I say 0.5 because he's never at home and chances are the poor dog is not getting enough to eat. This clearly rules out extramarital relationships, because straight men don't do that at all. How can he have a kid if he didn't enjoy the feeling of wet pussy and gushing all over inside it. Oh yes bring on that cissexism too. Despite all this evidence you still wrote him having gay sex (because we don't use bi in our terminology, even if you can't spell Birkin without the bi) and it is clear that this seems to be a pathological pattern you follow with other straight men.
Case closed, court dismissed, sentence: TWENTY YEARS (maybe in 20 years I'll come back to this comment and argue with you even more)